Page 140 - The Indian Optician Digital Edition May-June 2023

COVER
TEST:
A CHALLENGE
FOR EVERY EYE
PRACTITIONER
DR VINEET SHRIVASTAVA
B.E.M.S., D.O., (FOOREC)
FCLC (Gold Medalist)
Consultant Optometrist &
Educator Banswara, Rajasthan
136 | THE INDIAN OPTICIAN | MAY-JUNE 2023
cover test is an objective determination of the
presence and amount of ocular deviation. It provides
A a precise, objective measure of eye alignment and is
indispensable when assessing a patient with a suspected
squint. This is usually a preliminary examination of a case
of tropia or manifest squint, phoria or latent squint. There
are many procedures available to perform a cover test with
or without the help of any orthoptic instruments. However,
it should preferably be performed by a well-trained
orthoptist who has a specialisation in orthoptics.
EQUIPMENT REQUIRED FOR THE TEST
 Visual acuity chart
 Near cover test target
 Occluder
 Overhead lamp
 Horizontal and vertical prism bars
SET UP
 Patient wears habitual best refractive correction
for the distance being tested
OPTOMETRY